Free · Build shapes line by line

Geometry Construction Animator for Kids

Watch a triangle, hexagon, or set of angles grow from clear construction lines.

  • Clear, kid-friendly steps
  • Private in your browser
  • No signup
Line animation studio

Geometry construction animator

See how a shape can be built from clear lines and guide marks.

Private and local
Your ideaDraw a base, two sides, and a height line.
Start with an example
Live previewTriangle steps

Turn on “Add a line,” then draw right on the picture.

Keep your work

Save or open

Exports stay on this device. Animated SVGs play without a Bookify account.

Powered by Vivus, an open-source library available under MIT.

Three simple steps

How to use it

  1. Pick a ready example or open a safe local SVG.
  2. Press play, scrub the progress, or add your own line.
  3. Save an animated SVG, still SVG, PNG, or project.

Private by default

Your words and choices stay in this browser tab. There are no accounts, uploads, ads, or trackers inside the tool. Close the tab and the working data is gone.